Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a8627b325f2e02b5caa230402d5dcea7039fbdeac6aa8f6967e8c415d04e04e1' 
  AND token = '48JSg/N36wUHqQoLXuOLJmMJ0AM8gG85CmjkTkW+hV8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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