Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '28f46c9b4487543e629c307cdc06a90b4e5d930d5c49c8ca06c93b51f0361b68' 
  AND token = 'qHWNs6arhw+zs5luyd9AKFcyLClJGpWX57ApXsWlblg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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