Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '00876a4ddb05fa111cd8ca7ddd680acf14fc9f6e5d0f61d95e793749a6f9b305' 
  AND token = '7t1tT66ARyATwHsEkr14d6kw/trCZeg5yf4QpzquVhg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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