【MYSQL】所有查询表中有2千万数据--sql如何优化

这条sql如何优化
所有查询表中有2千万数据

SELECT
	* 
FROM
	(
		( SELECT * FROM q_user_01 WHERE id < 1162922 ORDER BY create_time DESC LIMIT 10 ) UNION ALL
		( SELECT * FROM q_user_02 WHERE id < 1162922 ORDER BY create_time DESC LIMIT 10 ) UNION ALL
		( SELECT * FROM q_user_03 WHERE id < 1162922 ORDER BY create_time DESC LIMIT 10 ) UNION ALL
		( SELECT * FROM q_user_04 WHERE id < 1162922 ORDER BY create_time DESC LIMIT 10 ) UNION ALL
		( SELECT * FROM q_user_05 WHERE id < 1162922 ORDER BY create_time DESC LIMIT 10 ) UNION ALL
		( SELECT * FROM q_user_06 WHERE id < 1162922 ORDER BY create_time DESC LIMIT 10 ) UNION ALL
		( SELECT * FROM q_user_07 WHERE id < 1162922 ORDER BY create_time DESC LIMIT 10 ) UNION ALL
		( SELECT * FROM q_user_08 WHERE id < 1162922 ORDER BY create_time DESC LIMIT 10 ) UNION ALL
		( SELECT * FROM q_user_09 WHERE id < 1162922 ORDER BY create_time DESC LIMIT 10 ) UNION ALL
		( SELECT * FROM q_user_10 WHERE id < 1162922 ORDER BY create_time DESC LIMIT 10 ) 
	) AS u 
WHERE
	u.id < 1162922 
ORDER BY
	u.create_time DESC 
	LIMIT 10

执行时间:2.913s