Authlete's policy on sweeping unused tokens

Authlete is removing access tokens and refresh tokens that have been unused in a certain period, 90 days. 

It is not affected by the token's expiration time that is defined in the service owner console. For example, a refresh token with a very long expiration time is subject to be removed from the token database after 90 days from the last usage.

If a token that has not been used for 90 days is used, the Authlete will send a response with "[A057302] The access token does not exist" because the token is already deleted from the database. 
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