Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f06acf49aad7abc1c61ea8586e83da0872ab499bb88b1eacc1c52003f7c489c8' 
  AND token = 'AA8oGyCNXEksNgy+FES8sKTJqbpGvn4KVnQe/WgNRMc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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