Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aae7899bfab39d6fd99b03087fc922f59ba40fc000b6afd83a80b5a71e495493' 
  AND token = 'wTVsoKj1Nr03eZg4zPBIrNkaFWAA3x8j6xIcCGpo3jE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}