Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1c5cc1bf4778f72bba99f24f437aad2bbdf49e5d6ba0ceda4708190386a0bdab' 
  AND token = 'ujeZJ9IwHNWb0dkJutNmdRWx5rselnOE2+7OiOzuq54=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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