Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '12fdc40034250c19d63537be109c87029845fa35fbc5c15677d1841541ea3b7b' 
  AND token = 'Z+XWSbtuocuahHrHplk0sXZkKW/+7x8pl/5zeTeFdgk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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