+----+-------------+-------+-------+---------------+------+---------+------+---------+--------------------------+
| id | select_type | table | type  | possible_keys | key  | key_len | ref  | rows    | Extra                    |
+----+-------------+-------+-------+---------------+------+---------+------+---------+--------------------------+
|  1 | SIMPLE      | hand  | range | uid           | uid  | 5       | NULL | 1560352 | Using where; Using index | 
+----+-------------+-------+-------+---------------+------+---------+------+---------+--------------------------+