Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9cf25965195746f6c52538104a6aa5205e3d98d6055f606889768107b571cd3f' 
  AND token = '3XHvRg8ntwptCffC3FdN83SuWhZe1Hksu+nE2ZZAytw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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