UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'PurAMOdehh2zWavAvl28aYyo53I5BuzENW1iCSlEb6I=' 
WHERE 
  key_id = '849857f9a19634d4943ea33d9046f013fd14694febb588fd24d163897de10857' 
  AND (
    token = 'PurAMOdehh2zWavAvl28aYyo53I5BuzENW1iCSlEb6I=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )