UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'kuQnr3AF+cORkRvDcuXFM6G15yE0DDo0BdEHg+DPjuo=' 
WHERE 
  key_id = '815f56ad808b183ec45d922891cf8bb952d4516f7a884c411ec7ebb868f7d545' 
  AND (
    token = 'kuQnr3AF+cORkRvDcuXFM6G15yE0DDo0BdEHg+DPjuo=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )