Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'ae3358d11b384bb86e9b38cc56a4008a173b9f23420c3ebc0f13e023dc89ef29' 
  AND token = 'RGMZKiyiw0uIMkeaqUs5Q6DjjYxECM+cZUbtUHwKrw4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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