Yep, that ran just fine. 0.00 sec with SQL_NO_CACHE
mysql> explain SELECT SQL_NO_CACHE contentid, contenttype, data FROM dbtech_thanks_entrycache WHERE contentid IN(31375124, 31375490, 31384856, 31386816, 31429366, 31430728, 31442868, 31444234, 31787740, 32130814, 32134788, 32156708, 32157978...