Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4f803067c11a20e20fb7b6214807f060b42230d9f6b86412dd354182f15b55a3' 
  AND token = 'Dsd5t/jlv4gqfo1S0X5NrE50rOh41dwW51A2REnVOrs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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