SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd636034650e5a4db768e5422cc680f472b12b958b43624c0997f328e2e36e2f9' 
  AND token = 'J8A8hx0+OPH3S6Q1ZhYnq3fs3EJxykTZvbq5zcjg+XU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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