Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '02abebfb1e78336591acecee55d20c2f9d8d3372d7855c5290cfb7527fd83800' 
  AND token = 'YNFxAkGH0q8JRVcR7LkT9EjSi6TbrNanEhYfXNVDpQo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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