Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '83dce886466a24f5b9117d4eff26ffd99074cf1785fb914ca44a6f92775610d8' 
  AND token = 'tDrGzHfwneH7w7BUPyqzrxZeaazUZ3JfQPo1A3dhjyI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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