UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '6Hfso2QuxX3bUYzedurfrZyzIqiuRdyEHmaXpXmRKwo=' 
WHERE 
  key_id = 'b51275887284517adc0d1f46af0125a1b01ffdcfd2e52b05b760149a0b4d4381' 
  AND (
    token = '6Hfso2QuxX3bUYzedurfrZyzIqiuRdyEHmaXpXmRKwo=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )