UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'g5ySIYRHl/xnHCIAilM9LYTovyOcFyxnvESppTpAc9Y=' 
WHERE 
  key_id = '9f5a42bb19b729704d0309a3891a087c5baee4614a35f0ebdc734bcb8c1ca8a7' 
  AND (
    token = 'g5ySIYRHl/xnHCIAilM9LYTovyOcFyxnvESppTpAc9Y=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )

Query time 0.00029