SELECT GET_LOCK('8551c617af775e5d268f0808da5fcd31', 300) AS ci_session_lock
SELECT `data` FROM `ci_sessions` WHERE `id` = 'd6hbhcnvhatlr9nhbmra2qgbkk6j1m5m'
DELETE FROM `ci_sessions` WHERE `id` = 'd6hbhcnvhatlr9nhbmra2qgbkk6j1m5m'
SELECT RELEASE_LOCK('8551c617af775e5d268f0808da5fcd31') AS ci_session_lock