R1:bfbf75a8720c

Slightly modernize ConduitTokenQuery

Summary: Ref T11954. This old query class can use slightly more modern code.

Test Plan: Ran Conduit methods, verified results are unchanged.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T11954

Differential Revision: https://secure.phabricator.com/D16996