How long does a working token from the Yandex API live?

Question

PHP

Hi all!
I am writing an application alone, so I wondered, how long does a working token live in time?
The essence of the application is this, the user registers on my site, takes a screenshot, I save this screenshot on my server, and then transfer it to Yandex.disk. It turns out that my application can have 100 users, and my application uses 1 token.
Actually, the question is, how long does a token live in time? Debugging as far as I know it is indefinite.
Hmm .. now the question came to mind, is it possible to use this debugging token in combat conditions? So you can say that only one user will access Yandex, that is, I, or rather my application, I will only use my disk.)))
Here are the guys stupid, point to let the true one)))