Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '45716688518518352ba4d88d0d30d3b190726ffb76b1b2089d95c4598137f93c' 
  AND token = 'RqEX/y4R/ygXgUj0qh0n27v3QRHwJvRPbaNkDX1Cz8A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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