Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '13db0750aee649c4c1addcce77d6e4bd6b03bf0ef46c6abaee143d67661e91ff' 
  AND token = 'Jfb4Nvu9fu36UTVlUCFInyWtc8i4nW7hkitgBbLodFM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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