Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9614657d9eebddf22b3d98d6bfcbc91a4ed783162981234f41a8ecf12936e41b' 
  AND token = '0J8sz9Cw/2ARiiaURaQ6HfwfwJYoUn0NZUl7dd+Uuos=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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