Unable to update text string in Mysql using PHP::PDO - php

Question

I have done it a million times before and never failed, but this time I am making some mistake and can't figure out.
I am doing
$sql = 'update user set token=:token and token_time=:token_time where id=:id';
$query = $con->prepare($sql);
$query->bindValue(':token',$token,PDO::PARAM_STR);
$query->bindValue(':token_time',$current_datetime,PDO::PARAM_STR);
$query->bindValue(':id',$id,PDO::PARAM_INT);
if($query->execute())
{
var_dump($token);
var_dump($id);
var_dump($current_datetime);
}
and I am getting the dump as follows
string(32) "a10b15b88ed35551a17cbdf4e5db2624" int(1) string(19) "2015-03-09 15:50:18"
which means the fields are not null, query executed and I also checked, there is a row with id=1 in the table user.
But when I look into the table, the row with id=1 is not updated. why?
EDIT
MySQL table
+------------+--------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+------------+--------------+------+-----+---------+----------------+
| id | int(11) | NO | PRI | NULL | auto_increment |
| fname | varchar(255) | YES | | NULL | |
| lname | varchar(255) | YES | | NULL | |
| email | varchar(255) | YES | | NULL | |
| password | varchar(255) | YES | | NULL | |
| contact | text | YES | | NULL | |
| token | text | YES | | NULL | |
| reg_time | datetime | YES | | NULL | |
| token_time | datetime | YES | | NULL | |
+------------+--------------+------+-----+---------+----------------+
EDIT
As per #davidstrachan, the problem is in the update query. , should be used instead of and, and then it works fine.
Now the new question is why didn't MySQL give error?