UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'GaPpRtqLMyZund7T6fb9qIcF2tEMxtg6nCrj3gNvoH0=' 
WHERE 
  key_id = '51b2e984e64eb538d1b22a46af89de7de7268c25252a0934205116936d8cdf24' 
  AND (
    token = 'GaPpRtqLMyZund7T6fb9qIcF2tEMxtg6nCrj3gNvoH0=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )