UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'Z4gswXT8U4uGiL78tGUdDblciZbtcTzAtKftTxB9YSU=' 
WHERE 
  key_id = 'b6305c32dab32e16df5989be201d06dddfadd085c301ac98f272b41cca1aba50' 
  AND (
    token = 'Z4gswXT8U4uGiL78tGUdDblciZbtcTzAtKftTxB9YSU=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )