SELECT 
  param, 
  param_3 
FROM 
  cscart_static_data 
WHERE 
  param_5 = '5' 
  AND section = 'A'

Query time 0.00047

JSON explain

{
  "query_block": {
    "select_id": 1,
    "nested_loop": [
      {
        "table": {
          "table_name": "cscart_static_data",
          "access_type": "ALL",
          "possible_keys": ["section"],
          "rows": 229,
          "filtered": 100,
          "attached_condition": "cscart_static_data.param_5 = '5' and cscart_static_data.section = 'A'"
        }
      }
    ]
  }
}

Result

param param_3
C:0:N
categories.view?category_id=223
categories.view?category_id=224
categories.view?category_id=225
categories.view?category_id=226
categories.view&category_id=227
categories.view&category_id=227
categories.view&category_id=227
categories.view?category_id=166
categories.view?category_id=167
categories.view?category_id=168 C:168:Y
categories.view?category_id=169 C:169:Y
categories.view?category_id=165 C:165:Y
categories.view?category_id=170 C:170:Y
categories.view?category_id=171 C:171:Y
categories.view?category_id=172 C:172:Y
categories.view?category_id=201 C:201:Y
categories.view?category_id=254
categories.view?category_id=260
categories.view?category_id=263 C:263:Y
categories.view?category_id=175
categories.view?category_id=176 C:176:Y
categories.view?category_id=185 C:185:Y
categories.view?category_id=186 C:186:Y
categories.view?category_id=202 C:202:Y
categories.view?category_id=187 C:187:Y
categories.view?category_id=188 C:188:Y
categories.view?category_id=189 C:189:Y
categories.view?category_id=196
categories.view?category_id=198 C:198:Y
categories.view?category_id=197 C:197:Y
categories.view?category_id=199 C:199:Y
categories.view?category_id=200 C:200:Y
categories.view?category_id=174
categories.view?category_id=190 C:190:Y
categories.view?category_id=191 C:191:Y
categories.view?category_id=193 C:193:Y
categories.view?category_id=194 C:194:Y
categories.view?category_id=195 C:195:Y
categories.view?category_id=234
categories.view?category_id=235 C:235:Y
categories.view?category_id=236 C:236:Y
categories.view?category_id=240 C:240:Y
categories.view?category_id=238 C:238:Y
categories.view?category_id=237 C:237:Y
categories.view?category_id=177
categories.view?category_id=178 C:178:Y
categories.view?category_id=182 C:182:Y
categories.view?category_id=179 C:177:Y
categories.view?category_id=180 C:180:Y
categories.view?category_id=181 C:181:Y
categories.view?category_id=245
categories.view?category_id=228
categories.view?category_id=229 C:229:Y
categories.view?category_id=230 C:230:Y
categories.view?category_id=231 C:231:Y
categories.view?category_id=232 C:232:Y
categories.view?category_id=241
categories.view?category_id=242 C:242:Y
categories.view?category_id=243 C:243:Y
categories.view?category_id=244 C:244:Y
categories.view?category_id=245
categories.view?category_id=246 C:246:Y
categories.view?category_id=247 C:247:Y
categories.view?category_id=249 C:249:Y
categories.view?category_id=248 C:248:Y
categories.view?category_id=247
categories.view?category_id=248 C:248:Y
categories.view?category_id=203
categories.view?category_id=204
categories.view?category_id=210 C:210:Y
categories.view?category_id=209 C:209:Y
categories.view?category_id=208 C:208:Y
categories.view?category_id=211
categories.view?category_id=212 C:212:Y
categories.view?category_id=213 C:213:Y
categories.view?category_id=214 C:214:Y
categories.view?category_id=215
categories.view?category_id=216 C:216:Y
categories.view?category_id=217 C:217:Y
categories.view?category_id=218 C:218:Y
categories.view?category_id=250
categories.view?category_id=251 C:251:Y
categories.view?category_id=252 C:252:Y
categories.view?category_id=253 C:253:Y
product_features.view_all&filter_id=10
products.newest
products.bestsellers
products.on_sale