UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '4gTvFGli3v5tLcg+qMbcHwvrpQbPkC1s/G/Ajj0uc64=' 
WHERE 
  key_id = '3e9a8bfe3f7400a0b0e012cb8bad741724a4d4f87aa0bffb8b4227d566a51a24' 
  AND (
    token = '4gTvFGli3v5tLcg+qMbcHwvrpQbPkC1s/G/Ajj0uc64=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )

Query time 0.00034