box api - Box.net API Is there a way to extend expiring time of access tokens? -

is there way extend expiring time of access tokens box api?

"each access_token valid 1 hour" short application , "refresh token" not use.

i need long expiring time. appreciated.

the access token valid 1 hour, refresh token can used retrieve new access token valid additional hour. there not way extend life span of individual access token.