UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'BqXLOtwHBdPAozOqWLFpwtcq1EypBnN2TeAxDTKrdJs=' 
WHERE 
  key_id = '6840573bdba7785bb569b499cdee1334782acfa710033ae3cb77e98d922b0893' 
  AND (
    token = 'BqXLOtwHBdPAozOqWLFpwtcq1EypBnN2TeAxDTKrdJs=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )