Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ca20c10ee72b2a57723c7149e72574d80c4bd41bc3890de335445b9334966cf2' 
  AND token = 'tnupo7PZbogLWH+Mnfs9iZIG+M9W6dzGo7Aplyc1YRg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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