SELECT GET_LOCK('af5e978101882d4f33b11eae2935bbf5', 300) AS ci_session_lock
SELECT `data` FROM `ci_sessions` WHERE `id` = 'rh97pq2h0tlm4ilbf3ci18p01giu4uid'
DELETE FROM `ci_sessions` WHERE `id` = 'rh97pq2h0tlm4ilbf3ci18p01giu4uid'
SELECT RELEASE_LOCK('af5e978101882d4f33b11eae2935bbf5') AS ci_session_lock