UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'TxXeeWEJ3VWvAuXA0MteprIdskw4eperZ1nItx0z6Ms=' 
WHERE 
  key_id = '81ccd342028ae893f37709fec1cd727f1373579155eb1971c0b76028ebd54f0f' 
  AND (
    token = 'TxXeeWEJ3VWvAuXA0MteprIdskw4eperZ1nItx0z6Ms=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )