Validity field

[altermim]

Where can i find validity field in database and get it with users? like timestamp

SELECT CONCAT(first_name,last_name) as Agent_Name ,u.login, FROM_UNIXTIME(Preferences_value) as LastLogin FROM otrs.user_preferences,users u where preferences_key like '%userlastlogin%' and user_id = u.id

[altermim]

found it "valid_id" smallint type