Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1de0cde66d7c8fa980959b870da643b2d23657d4cc81decc97a8723a6744eed9' 
  AND token = 'I48BkgK2EYi0jWhytWqIimzXlQAE7T56RX17Kw/fpzE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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