mysql> explain
    -> SELECT /* ApiQueryBacklinks::run 213.221.18.157 */  page_id,page_title,page_namespace,page_is_redirect,pl_title,pl_namespace  FROM `page`,`pagelinks`  WHERE (pl_from=page_id) AND ((pl_title = 'Insurance_company' AND pl_namespace = '0') OR (pl_title = 'Assurfinance' AND pl_namespace = '0') OR (pl_title = 'Insured' AND pl_namespace = '0')) AND (page_id>=18025107)  ORDER BY pl_namespace, pl_title, pl_from LIMIT 101
    -> ;
+-----------+-------+----------------------+---------+---------+--------------------+---------+----------------------------------------------+
| table     | type  | possible_keys        | key     | key_len | ref                | rows    | Extra                                        |
+-----------+-------+----------------------+---------+---------+--------------------+---------+----------------------------------------------+
| page      | range | PRIMARY              | PRIMARY |       4 | NULL               | 3012360 | Using where; Using temporary; Using filesort |
| pagelinks | ref   | pl_from,pl_namespace | pl_from |       8 | page.page_id,const |       3 | Using where; Using index                     |
+-----------+-------+----------------------+---------+---------+--------------------+---------+----------------------------------------------+
2 rows in set (0.00 sec)