Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '67b748c864aecfca77248c0a7d99ad76320f92b9bf57bd023cd48177709249cd' 
  AND token = 'QCnpEAAYaTp3V2pkXU+yckZCYgMxaWPgeDIJ8uhTWhM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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