Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65602d3159d3cd038eba43b53d743234d1c129d8cf0de4b5d170f1f4fb7cf1b4' 
  AND token = 'JSDH8VmHsyrOBMm0EcTzN3Uur2WUxEzl5XIhoKoP59E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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