SELECT GET_LOCK('90d647bee4eed990a421fe3ba2891e00', 300) AS ci_session_lock
SELECT `data` FROM `ci_sessions` WHERE `id` = '1qa2dd8bfmaa3o3b2bdn4eoonislh082'
DELETE FROM `ci_sessions` WHERE `id` = '1qa2dd8bfmaa3o3b2bdn4eoonislh082'
SELECT RELEASE_LOCK('90d647bee4eed990a421fe3ba2891e00') AS ci_session_lock