What is intent of ID Token expiry time in OpenID Connect?

Question

In OpenID Connect an access token has an expiry time. For authorization code flow, this is typically short (eg 20 minutes) after which you use the refresh token to

Answer 1

I wanted to post this answer as a comment but since I haven't been very active on StackOverflow, I guess I'm posting it as an alternate answer.

You also use id_token as the id_token_hint when attempting to log the user out of a session http://openid.net/specs/openid-connect-session-1_0.html. I honestly don't think that it really matters if the id_token is expired at this point since you're only concerned about logging out a particular user.