SELECT GET_LOCK('205a84b1f87ea477804488e37958d872', 300) AS ci_session_lock
SELECT `data` FROM `ci_sessions` WHERE `id` = 'k55k21d4fcseva6ag87htuilmjjgtu2o'
DELETE FROM `ci_sessions` WHERE `id` = 'k55k21d4fcseva6ag87htuilmjjgtu2o'
SELECT RELEASE_LOCK('205a84b1f87ea477804488e37958d872') AS ci_session_lock