Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '25f439d66f34c9f7a9d7887890ff08ac6486b53225157e319be02162ed0b34db' 
  AND token = 'uk6eC5M2uIYLspD/ykg0i+4oSZmYKfK0cNuKPrAy/x4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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