Token expiration appears incorrect inside the token

[Tyler-Keith-Thompson]

When I put the JWT's in jwt.io I see that the expiration and the issue date are the same:

"iat": 1679536376,
"exp": 1679539976,

However, in my configuration for the client I have:

{
    "ClientId": "authorization-code-with-pkce-client-id",
    "ClientSecrets": ["authorization-code-with-pkce-client-secret"],
    "Description": "Client for authorization code flow",
    "AllowedGrantTypes": ["authorization_code"],
    "AllowAccessTokensViaBrowser": true,
    "RedirectUris": ["OIDCTest://oauth-callback"],
    "AllowedScopes": ["openid", "profile", "email", "offline_access"],
    "IdentityTokenLifetime": 3600,
    "AccessTokenLifetime": 3600,
    "RequireClientSecret": false,
    "AllowOfflineAccess": true
}