Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'affe4391a2e9b66bce723bdc192ae097e8f3d258076f41e272ed0571d3104ae8' 
  AND token = 'FtwgpmNZrEKEWFC7/AeZCIaCn+a1dm8/p1QVhscAkxw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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