mysql> explain select id, confession from Confessions.confessions where id = 400;
+----+-------------+-------------+-------+---------------+---------+---------+-------+------+-------+
| id | select_type | table       | type  | possible_keys | key     | key_len | ref   | rows | Extra |
+----+-------------+-------------+-------+---------------+---------+---------+-------+------+-------+
|  1 | SIMPLE      | confessions | const | PRIMARY       | PRIMARY | 4       | const |    1 |       |
+----+-------------+-------------+-------+---------------+---------+---------+-------+------+-------+