UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'flgKY+eMqwc+j3J7mtQPtZJjjNWHeX3ksgTAHkAw2+o=' 
WHERE 
  key_id = '68fe8cb73712e84bb524f408c964a968a38a937a36b02a34cd9f25f62d1de508' 
  AND (
    token = 'flgKY+eMqwc+j3J7mtQPtZJjjNWHeX3ksgTAHkAw2+o=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )