UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'MCIRkpm+8rzqsjlegO3Wq0DzBCoyJmxoaH98YgJH0CQ=' 
WHERE 
  key_id = 'd2f50b03d0a98e084c4c0887bf3fce3907f84633a896960402b82c1c8adc5736' 
  AND (
    token = 'MCIRkpm+8rzqsjlegO3Wq0DzBCoyJmxoaH98YgJH0CQ=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )