Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0a152bc441774d10fe955d8451b52df33e7481e22f71c9fbd315bf4bd101b52c' 
  AND token = '/wCrBZO0U/mvcAlB4rglFvPjKZ4KEd12sboeK1S9dPE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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