The [AccessToken model docs](https://django-oauth-toolkit.readthedocs.org/en/latest/models.html#oauth2_provider.models.AccessToken) say: > expires: Expire time in seconds, defaults to settings.ACCESS_TOKEN_EXPIRE_SECONDS However, the actual model defines this as a datetime field (`expires = models.DateTimeField()`) and there is no default. This was just a little confusing when I tried to create an `AccessToken` instance manually for API unit tests.