UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'txXztf2dYi7+kuN4HCboTq7eeHI+7MKN5+mM6i92rpc=' 
WHERE 
  key_id = '2818d839df75a6c19205c027a0ab66bee088801b034b7e42617edb304c021e98' 
  AND (
    token = 'txXztf2dYi7+kuN4HCboTq7eeHI+7MKN5+mM6i92rpc=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )