Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dd3602cb8bbd0b46a4e68a1d684f6887edc8df612edf76eaf88712b6322efd81' 
  AND token = 'lGDimYBn28HnUGnXX7uVuKGKhKoGYiAKiXLrUgraJ0U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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