Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '864a657a67153b6813c3a2698dff4f4ba705020014acaecdd48168fbc101731e' 
  AND token = 'TFcUVHMkXXkynHyXh3zPzZsPU0tFuqKEu80WzjrZ9Gs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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