Access token lost

I need your help for a pretty unusual problem.
I created an access token some time ago and now I want to revoke it, but I am not able to find it anywhere in my gitlab installation (we have Giltab 13.12.10 ee self hosted).
What I have is something like a username and the correspondent password, if I use them I am able to clone internal repositories.
I look for it in users by querying a user with that username, and in personal access tokens by using this command

token = PersonalAccessToken.find_by_token('token-string-here123')

could you suggest me where I can look for it?

Solved. We found it.