Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0274e594ea159737b240d67d003f5978b659efb4bf5a1c7bf8cd9579752de6d9' 
  AND token = 'DN+tgwZvceEkGwRDptP0RApbOShHOHH8Y2Y/NlEJcDk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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