UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'tC5QeBo/9mUkK5hwPTCrC0PPAOh4bSF7gWUbOMiuW+g=' 
WHERE 
  key_id = '0f51451949a3770f42f18dbc903dde094d7381ace4636b089cd8fb0b56c59c79' 
  AND (
    token = 'tC5QeBo/9mUkK5hwPTCrC0PPAOh4bSF7gWUbOMiuW+g=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )