Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4dd41790bb3740af3a540edb12c87e4daf52ee93f37f8907ec15b1df85cb2db1' 
  AND token = 'XeBx2Ra6UcIfOItPkg1xf5GD1ewA5NBanQGYuaBYX9E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}