Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eed3a80b68464ff5ae8de6e0327da3b5c5e491816f8f8b8bcc4dbd79c2cb3fff' 
  AND token = 'PGVKdBLFBGWaB9Y149s58M/azbkaf1orUCZyZcIu5a4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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