Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '866c73839e3969dda0344b8db111f37bdae5829468f13bcdfc156e48afc7f5af' 
  AND token = 'NNOWSTtjzs/SYkeTMXmnhRb6XwJeAMija801S73w34I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00088

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}