Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e09d656aae17d47b69510f323a7fe9bf158ac8fdb032c03b8ea2181bb14a1914' 
  AND token = 'EGmTrirWr24yLDeP0ENCjI2LJy2A5x3L+qCK5Fs3ivk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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