SQL Explain

Executed SQL
SELECT `cms_block`.*, `cbs`.`store_id` FROM `cms_block` INNER JOIN `cms_block_store` AS `cbs` ON cms_block.block_id = cbs.block_id WHERE (`cms_block`.`block_id`='52') AND (is_active = 1) AND (cbs.store_id in (1, 0) ) ORDER BY `store_id` DESC LIMIT 1
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE cms_block const PRIMARY PRIMARY 2 const 1
1 SIMPLE cbs range PRIMARY,IDX_CMS_BLOCK_STORE_STORE_ID PRIMARY 4 2 Using where; Using index