Cum loads all day every day

SELECT * FROM gallery2 WHERE topic_id="295776" UNION SELECT * FROM gallery2 WHERE topic_id="941518" UNION SELECT * FROM gallery2 WHERE topic_id="1149592" UNION SELECT * FROM gallery2 WHERE topic_id="990381" UNION SELECT * FROM gallery2 WHERE topic_id="1128326" UNION SELECT * FROM gallery2 WHERE topic_id="1555448" UNION SELECT * FROM gallery2 WHERE topic_id="1593472" UNION SELECT * FROM gallery2 WHERE topic_id="715389" UNION SELECT * FROM gallery2 WHERE topic_id="548425" UNION SELECT * FROM gallery2 WHERE topic_id="1763100" UNION SELECT * FROM gallery2 WHERE topic_id="1492259" UNION SELECT * FROM gallery2 WHERE topic_id="840540" UNION SELECT * FROM gallery2 WHERE topic_id="1446987" UNION SELECT * FROM gallery2 WHERE topic_id="260368" UNION SELECT * FROM gallery2 WHERE topic_id="1315910" UNION SELECT * FROM gallery2 WHERE topic_id="89028"