Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '146ea3299dc3cf036cb118b1b18055de31b7a31c1ff90bfa1fb6440afb728be5' 
  AND token = 'vBZPg/E3MZUUaiw4O+4EwZAd96gspIXFcZlVr6dNL9g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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