Php-how to ensure Token effectiveness between two systems with logon and business separation

Currently, a system has an independent logon system. after successful logon, the token is returned as a token in exchange for user information. However, the logic part of the system cannot determine whether the token is valid in real time, because the token is issued by the login system, it does not know whether the token has expired if you do not access the login system. if you want to know in real time that the token status is creating a verification interface between the two systems, you can indeed verify whether the token has expired, however, this affects the efficiency. every time you log on to the system to verify the token php

Currently, a system has an independent logon system. after successful logon, the token is returned as a token in exchange for user information. However, the logic part of the system cannot determine whether the token is valid in real time, because the token is issued by the login system, it does not know whether the token has expired if you do not access the login system. if you want to know in real time that the token status is creating a verification interface between the two systems, you can indeed verify whether the token has expired, however, this affects the efficiency. every time you log on to the system to verify the token