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SELECT 
  cscart_ult_product_descriptions.product_id, 
  cscart_ult_product_descriptions.short_description, 
  IF(
    cscart_ult_product_descriptions.short_description = "", 
    cscart_ult_product_descriptions.full_description, 
    ""
  ) AS full_description, 
  cscart_ult_product_descriptions.meta_keywords, 
  cscart_ult_product_descriptions.meta_description, 
  cscart_ult_product_descriptions.search_words, 
  cscart_ult_product_descriptions.promo_text 
FROM 
  cscart_ult_product_descriptions 
WHERE 
  cscart_ult_product_descriptions.product_id IN (78, 79, 81, 80) 
  AND cscart_ult_product_descriptions.company_id = 1 
  AND cscart_ult_product_descriptions.lang_code = 'en'

Query time 0.00036

Explain
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	cscart_ult_product_descriptions	range	PRIMARY,product_id,company_id	PRIMARY	13		4	Using index condition

Result

product_id	full_description	promo_text
79	<p>The adiZero™ Tempaia shoes by adidas are lightweight, breathable tennis shoes designed for multi-court use. They feature a breathable upper, adiPRENE®+ in the forefoot for propulsion, adiPRENE® heel cushioning and EXTENDED TORSION® for support.</p>	<p class="product-promo-text"><span class="product-promo-header">FREE US shipping over $100!</span><span class="product-promo-body">Orders within next 2 days will be shipped on Monday</span></p>
80	<div class="black-white-black-white text description"><div class="product-description-component"><p><strong>The Nike Tenkay Slip TXTL: Casual-cool with a sporty side</strong></p>Versatile and super comfortable, the Nike Tenkay Slip TXTL Women's Shoe looks as good as it feels. With a soft textile upper and a durable rubber outsole, this shoe provides excellent traction on a variety of surfaces.<br /><p><strong>Benefits</strong></p><li>Textile upper with suede overlays for a comfortable fit</li><li>Elastic slip-on entry for easy on and off</li><li>Flex grooves at outsole for enhanced flexibility</li><br /><p><strong>Additional Details</strong></p><li>Removable ankle strap for a versatile fit</li><li>Rubber outsole for durability</li></div></div>	<p class="product-promo-text"><span class="product-promo-header">FREE US shipping over $100!</span><span class="product-promo-body">Orders within next 2 days will be shipped on Monday</span></p>
81	<div class="linePadding leadingEquity">Authentic designs. Free-spirited heritage. Shaping the moccasin's place in history since 1946.</div><div class="linePadding">Leather</div><ul class="equityBullets firstSet"><li>• Genuine leather construction </li><li>• Lace-up front </li><li>• Long-wearing nub bottom </li><li>• Cushioned leather insole </li><li>• Contrast stitching </li></ul>	<p class="product-promo-text"><span class="product-promo-header">FREE US shipping over $100!</span><span class="product-promo-body">Orders within next 2 days will be shipped on Monday</span></p>