Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '705b6a6058812875778e775d48ceaac16208cb6509f1876a2a94e3270dcb5e1b' 
  AND token = 'GwX/3XWw6rw7zZ84b4cfjvw1oQ2y+kaNuLPn+hqnHQc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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