Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8e57bff0ccebb37a0d97126eb9d6781504f78012564111987ca70db04f3b13a7' 
  AND token = 'iZyHRZNi5XX1OPI8OSO9kO7yA7TwvvPNPl14e/fT0y4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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