When validating a token, under load, a full table scan could happen because of missing indexes. This new index drastically help the database to get through the revocation events. Closes-Bug: #2081082 Change-Id: Ic44c945f3cb65b48ff72052fd2b4f6d45e118b2e Signed-off-by: Quentin GROLLEAU <quentin.grolleau@corp.ovh.com> Signed-off-by: Arnaud Morin <arnaud.morin@ovhcloud.com>