SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'faab4500ddd980631daf4e6063b1c997a5a6bd0a8235d2f98c68e7e227200623' 
  AND token = 'A8dW3OZOPs+htpyo+XZbNHy3+6vKQzqj9TTQh+Ou/XU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00055

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}