Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0d11f911974272ade4a318262bc7d27e63c9c890ac2ab631e421cf982a765d32' 
  AND token = 'k2IwV9U7FOFrK+JP79qGjRqyBRN3ebVIYDKfoVOqdJw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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