diff --git a/api/rest/web_api_handler.go b/api/rest/web_api_handler.go
index 70c8c84..465cf50 100644
--- a/api/rest/web_api_handler.go
+++ b/api/rest/web_api_handler.go
@@ -348,7 +348,7 @@ func (wCtx *WebApiContext) Introspect(respWriter http.ResponseWriter, request *h
 	result := dto.IntrospectTokenResult{
 		Active: active,
 		Type:   authTokenType,
-		Exp:    realmPtr.TokenExpiration,
+		Exp:    int(session.Expired.Unix()),
 	}
 	afterHandle(&respWriter, status, &result)
 }
diff --git a/application/application_test.go b/application/application_test.go
index 7faec27..bfa7b25 100644
--- a/application/application_test.go
+++ b/application/application_test.go
@@ -12,6 +12,7 @@ import (
 	"testing"
 	"time"
 
+	"github.com/golang-jwt/jwt/v4"
 	"github.com/stretchr/testify/assert"
 	"github.com/wissance/Ferrum/config"
 	"github.com/wissance/Ferrum/data"
@@ -108,6 +109,7 @@ func testRunCommonTestCycleImpl(t *testing.T, appConfig *config.AppConfig, baseU
 	// 2. Introspect valid token
 	// todo(UMV): add Introspect result check
 	tokenIntResult := checkIntrospectToken(t, baseUrl, realm, token.AccessToken, testClient1, testClient1Secret, "200 OK")
+	compareTokenClaimsAndIntrospect(t, token.AccessToken, tokenIntResult)
 	active, ok := tokenIntResult["active"]
 	assert.True(t, ok)
 	assert.True(t, active.(bool))
@@ -246,3 +248,19 @@ func checkIntrospectToken(t *testing.T, baseUrl string, realm string, token stri
 	assert.Nil(t, err)
 	return result
 }
+
+func compareTokenClaimsAndIntrospect(t *testing.T, accessToken string, introspectResult map[string]interface{}) {
+	t.Helper()
+
+	mapClaims := &jwt.MapClaims{}
+	parser := jwt.NewParser()
+	_, _, err := parser.ParseUnverified(accessToken, mapClaims)
+	assert.NoError(t, err)
+	tokenExp, ok := (map[string]interface{})(*mapClaims)["exp"]
+	assert.True(t, ok)
+
+	introspectExp, ok := introspectResult["exp"]
+	assert.True(t, ok)
+
+	assert.EqualValues(t, tokenExp, introspectExp)
+}
diff --git a/data/token.go b/data/token.go
index 3baadad..ffceb77 100644
--- a/data/token.go
+++ b/data/token.go
@@ -1,8 +1,6 @@
 package data
 
 import (
-	"time"
-
 	"github.com/google/uuid"
 	"github.com/wissance/Ferrum/utils/jsontools"
 )
@@ -12,8 +10,8 @@ type RawUserInfo interface{}
 
 // JwtCommonInfo - struct with all field for representing token in JWT format
 type JwtCommonInfo struct {
-	IssuedAt     time.Time `json:"iat"`
-	ExpiredAt    time.Time `json:"exp"`
+	IssuedAt     int64     `json:"iat"`
+	ExpiredAt    int64     `json:"exp"`
 	JwtId        uuid.UUID `json:"jti"`
 	Type         string    `json:"typ"`
 	Issuer       string    `json:"iss"`
diff --git a/services/jwt_generator_service.go b/services/jwt_generator_service.go
index 68af34a..89f685b 100644
--- a/services/jwt_generator_service.go
+++ b/services/jwt_generator_service.go
@@ -30,7 +30,8 @@ type JwtGenerator struct {
  * Returns: JWT-encoded string with access token
  */
 func (generator *JwtGenerator) GenerateJwtAccessToken(realmBaseUrl string, tokenType string, scope string, sessionData *data.UserSession,
-	userData data.User) string {
+	userData data.User,
+) string {
 	accessToken := generator.prepareAccessToken(realmBaseUrl, tokenType, scope, sessionData, userData)
 	return generator.generateJwtAccessToken(accessToken)
 }
@@ -55,9 +56,9 @@ func (generator *JwtGenerator) generateJwtAccessToken(tokenData *data.AccessToke
 	token := jwt.New(jwt.SigningMethodHS256)
 	// signed token contains embedded type because we don't actually know type of User, therefore we do it like jwt do but use RawStr
 	signedToken, err := generator.makeSignedToken(token, tokenData, generator.SignKey)
-	//token.SignedString([]byte("secureSecretText"))
+	// token.SignedString([]byte("secureSecretText"))
 	if err != nil {
-		//todo(UMV): think what to do on Error
+		// todo(UMV): think what to do on Error
 		generator.Logger.Error(stringFormatter.Format("An error occurred during signed Jwt Access Token Generation: {0}", err.Error()))
 	}
 
@@ -69,7 +70,7 @@ func (generator *JwtGenerator) generateJwtRefreshToken(tokenData *data.TokenRefr
 	token := jwt.NewWithClaims(jwt.SigningMethodHS256, tokenData)
 	signedToken, err := token.SignedString(generator.SignKey)
 	if err != nil {
-		//todo(UMV): think what to do on Error
+		// todo(UMV): think what to do on Error
 		generator.Logger.Error(stringFormatter.Format("An error occurred during signed Jwt Refresh Token Generation: {0}", err.Error()))
 	}
 	return signedToken
@@ -77,11 +78,14 @@ func (generator *JwtGenerator) generateJwtRefreshToken(tokenData *data.TokenRefr
 
 // prepareAccessToken builds data.AccessTokenData from a lot of params
 func (generator *JwtGenerator) prepareAccessToken(realmBaseUrl string, tokenType string, scope string, sessionData *data.UserSession,
-	userData data.User) *data.AccessTokenData {
+	userData data.User,
+) *data.AccessTokenData {
 	issuer := realmBaseUrl
-	jwtCommon := data.JwtCommonInfo{Issuer: issuer, Type: tokenType, Audience: "account", Scope: scope, JwtId: uuid.New(),
-		IssuedAt: sessionData.Started, ExpiredAt: sessionData.Expired, Subject: sessionData.UserId,
-		SessionId: sessionData.Id, SessionState: sessionData.Id}
+	jwtCommon := data.JwtCommonInfo{
+		Issuer: issuer, Type: tokenType, Audience: "account", Scope: scope, JwtId: uuid.New(),
+		IssuedAt: sessionData.Started.Unix(), ExpiredAt: sessionData.Expired.Unix(), Subject: sessionData.UserId,
+		SessionId: sessionData.Id, SessionState: sessionData.Id,
+	}
 	accessToken := data.CreateAccessToken(&jwtCommon, userData)
 	return accessToken
 }
@@ -89,9 +93,11 @@ func (generator *JwtGenerator) prepareAccessToken(realmBaseUrl string, tokenType
 // prepareRefreshToken builds data.TokenRefreshData from a lot of params
 func (generator *JwtGenerator) prepareRefreshToken(realmBaseUrl string, tokenType string, scope string, sessionData *data.UserSession) *data.TokenRefreshData {
 	issuer := realmBaseUrl
-	jwtCommon := data.JwtCommonInfo{Issuer: issuer, Type: tokenType, Audience: issuer, Scope: scope, JwtId: uuid.New(),
-		IssuedAt: sessionData.Started, ExpiredAt: sessionData.Expired, Subject: sessionData.UserId,
-		SessionId: sessionData.Id, SessionState: sessionData.Id}
+	jwtCommon := data.JwtCommonInfo{
+		Issuer: issuer, Type: tokenType, Audience: issuer, Scope: scope, JwtId: uuid.New(),
+		IssuedAt: sessionData.Started.Unix(), ExpiredAt: sessionData.Expired.Unix(), Subject: sessionData.UserId,
+		SessionId: sessionData.Id, SessionState: sessionData.Id,
+	}
 	accessToken := data.CreateRefreshToken(&jwtCommon)
 	return accessToken
 }