SELECT 
  cscart_product_descriptions.product_id, 
  cscart_product_descriptions.short_description, 
  IF(
    cscart_product_descriptions.short_description = '' 
    OR cscart_product_descriptions.short_description IS NULL, 
    cscart_product_descriptions.full_description, 
    ''
  ) AS full_description, 
  cscart_product_descriptions.meta_keywords, 
  cscart_product_descriptions.meta_description, 
  cscart_product_descriptions.search_words, 
  cscart_product_descriptions.promo_text, 
  cscart_product_descriptions.unit_name 
FROM 
  cscart_product_descriptions 
WHERE 
  cscart_product_descriptions.product_id IN (140, 141, 144, 143, 142) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00035

Explain
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE cscart_product_descriptions range PRIMARY,product_id PRIMARY 9 5 Using index condition

Result

product_id short_description full_description meta_keywords meta_description search_words promo_text unit_name
140 <p>This easy-to-carry, powerful speaker system frees your iPod/iPhone music for your active lifestyle. Enjoy your entire content library whenever you want, wherever you go.</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>
141 <p>This easy-to-carry, powerful speaker system frees your iPod/iPhone music for your active lifestyle. Enjoy your entire content library whenever you want, wherever you go.</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>
142 <p>Enjoy music from all your favorite sources with this attractive all-in-one audio system.</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>
143 <p>A certified "works with iPhone" Desktop Audio product that every iPhone or iPod fan who wants to enjoy a higher sound quality with a powerful output needs to have! The PDX-30 includes a card-type remote control for additional convenience.</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>
144 <p>A certified "works with iPhone" Desktop Audio product that every iPhone or iPod fan who wants to enjoy a higher sound quality with a powerful output needs to have! The PDX-30 includes a card-type remote control for additional convenience.</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>