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 (12379) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00034

JSON explain

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    },
    "table": {
      "table_name": "cscart_product_descriptions",
      "access_type": "const",
      "possible_keys": [
        "PRIMARY",
        "product_id"
      ],
      "key": "PRIMARY",
      "used_key_parts": [
        "product_id",
        "lang_code"
      ],
      "key_length": "9",
      "ref": [
        "const",
        "const"
      ],
      "rows_examined_per_scan": 1,
      "rows_produced_per_join": 1,
      "filtered": "100.00",
      "cost_info": {
        "read_cost": "0.00",
        "eval_cost": "0.10",
        "prefix_cost": "0.00",
        "data_read_per_join": "4K"
      },
      "used_columns": [
        "product_id",
        "lang_code",
        "short_description",
        "full_description",
        "meta_keywords",
        "meta_description",
        "search_words",
        "promo_text",
        "unit_name"
      ]
    }
  }
}

Result

product_id short_description full_description meta_keywords meta_description search_words promo_text unit_name
12379 Compact single-stage cylinder pressure regulator (based on ISO 2503) for technical, medical, corrosive, laboratory and high-purity gases; compact design and high regulation accuracy; inlet (right): cylinder connection per DIN 477-1 or other standards on request; outlet: compression fitting or customer-specific connection; inlet and outlet pressure gauges Ø50 mm (DIN EN 837); 50 µm inlet filter; relief valve; gas purity up to 6.0; max inlet pressure up to 200 bar in specification, with ordering code variants L/H/300 for 70/210/300 bar inlet classes; outlet pressure ranges 1.5–30 bar (special ranges up to 60 bar possible); temperature -40 to +70 °C; body materials: chrome-plated brass, stainless steel or Monel; diaphragm: stainless steel or Hastelloy; ECD compatible; leak rate < 1×10^-8 (He); PED and ATEX compliant; options: shut-off or metering valve, purge system (self or external), contact gauge or pressure transmitter.