<div id="contact_block">
<div class="header_contacts">             <div class="worktime">                   <img class="img_contact" src="img/icon-schedule.png">                           <div>
<span class="header_span">Режим работы:</span>
<span>Пн-Пт: 11:00 - 21:30</span>
<span>Сб-Вс: 10:00 - 21:30</span>
</div>
</div>
<div class="phones">
  <img class="img_contact" src="img/icon-phone.png">
 <div>
 <span class="header_span">Заказ пиццы:</span>
<span><a href="tel:+79128633404">33-34-04</a></span>
<span><a href="tel:+79128639363">33-93-63</a></span>
</div>
</div>
</div>
</div>

div#contact_block {
    display: flex;
    font-family: UniversLTCYR-57Condensed, sans-serif;
    align-items: flex-end;
background-color: red;  
}

.header_contacts {
    display: flex;
    flex-direction: row;
  background-color: blue;
}

.worktime, .phones {
    display: flex;
    flex-direction: row;
    margin-left: 20px;
}

.header_contacts img {
    /* width: 50px; */
    padding: 22px;
    height: 50px;
    /* height: auto; */
    margin-right: 20px;
}

.worktime >div, .phones > div {
    display: flex;
    flex-direction: column;
}