Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '04e461a91910dbbb0538706f940a383249bcdfbb9727f20422247733d14e1c65' 
  AND token = 'WACcGWR06MhKY2j5YWHFiacPFTQQA05cx/BYVD/oFN0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}