UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'VC91LPryZvbNr/nUnL+wvDcEKu4QtRlygYAPmNzh+FE=' 
WHERE 
  key_id = '4ecb652a64e380a64b4da4c816da9c144e8d3916f41fd5119629fe0e7008bcb2' 
  AND (
    token = 'VC91LPryZvbNr/nUnL+wvDcEKu4QtRlygYAPmNzh+FE=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )