Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3da85769f269fab6f35f88d7bc9c4d10cb644f1196474c3191c4a59f44bc1d11' 
  AND token = 'EoJiNcIwsvalErBDyB8AFcSbv/ihsxw8dpqAwK+HZv4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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