Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9227e5e3b0dce3f25bbdc0a769e91917e789f3bfa8e266bc250d648ac991f0e1' 
  AND token = 'wkQRYhzbiNqKUX9cawR8spFkRvxKab8s38kumM/L1CQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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