Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7f54e2ecad6b3d3cf175dbc118a06ed9504e8833057eb4c7ca36d7d82c76d872' 
  AND token = 'hBSSEoOXDh8MYr7E8J7VoBq5c44+y8Lq6kiuywdz35o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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