SELECT 
  data, 
  expiry 
FROM 
  cscart_cache 
WHERE 
  name = 'scheme_block.cache_customer__1scheme_block_currencies' 
  AND company_id = 0 
  AND (
    expiry = 0 
    OR expiry > 1776178489
  )

Query time 0.00121

JSON explain

{
  "query_block": {
    "select_id": 1,
    "nested_loop": [
      {
        "table": {
          "table_name": "cscart_cache",
          "access_type": "const",
          "possible_keys": ["PRIMARY", "name", "company_id"],
          "key": "PRIMARY",
          "key_length": "771",
          "used_key_parts": ["name", "company_id"],
          "ref": ["const", "const"],
          "rows": 1,
          "filtered": 100
        }
      }
    ]
  }
}

Result

data expiry
a:8:{s:7:"content";a:2:{s:10:"currencies";a:2:{s:4:"type";s:8:"function";s:8:"function";a:1:{i:0;s:31:"fn_block_manager_get_currencies";}}s:4:"text";a:2:{s:4:"type";s:5:"input";s:13:"default_value";s:0:"";}}s:8:"settings";a:2:{s:6:"format";a:3:{s:4:"type";s:9:"selectbox";s:6:"values";a:2:{s:4:"name";s:17:"opt_currency_name";s:6:"symbol";s:19:"opt_currency_symbol";}s:13:"default_value";s:4:"name";}s:14:"dropdown_limit";a:2:{s:4:"type";s:5:"input";s:13:"default_value";s:1:"0";}}s:9:"templates";a:1:{s:21:"blocks/currencies.tpl";a:1:{s:4:"name";s:10:"currencies";}}s:8:"wrappers";a:6:{s:34:"blocks/wrappers/footer_general.tpl";a:1:{s:4:"name";s:14:"footer_general";}s:35:"blocks/wrappers/mainbox_general.tpl";a:1:{s:4:"name";s:15:"mainbox_general";}s:34:"blocks/wrappers/mainbox_simple.tpl";a:1:{s:4:"name";s:14:"mainbox_simple";}s:36:"blocks/wrappers/onclick_dropdown.tpl";a:1:{s:4:"name";s:16:"onclick_dropdown";}s:35:"blocks/wrappers/sidebox_general.tpl";a:1:{s:4:"name";s:15:"sidebox_general";}s:37:"blocks/wrappers/sidebox_important.tpl";a:1:{s:4:"name";s:17:"sidebox_important";}}s:13:"multilanguage";b:1;s:13:"is_managed_by";a:1:{i:0;s:4:"ROOT";}s:4:"type";s:10:"currencies";s:13:"is_manageable";b:1;} 0