Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '926807256f378aae01e8e6e0c50f9e43a141fc96aae5b7c8c803e83db615390f' 
  AND token = 'I01e/6sgde9GEDzQ2TkFpyrYA4brl9Gd3pwU98c1zT8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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