Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8989d56b538c99b52317e72717ab0a91bb29aa75f138dbcd4d1b4152cf54147f' 
  AND token = 'EeS6i++3ymdtihhjMz5p3gZ85pluJ4+YFpnUu4lo6AA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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