Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '69039484116a7f0ad2d6b39fa47bf6afb101896369bd0b563a2ff0626d018f53' 
  AND token = 'ljGeRJjH+kg13FifbuDkNAdD85iTn6HNqy7jq1WxaEE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}