SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '38d0d5c966aeb4e8ab6a2bc8a7d9542452e179386f8f886fd56f9b9ad533ac30' 
  AND token = 'qjqAOkb0QC++VN4g17Jm7mbhj9MGydgjrZeBTO7yiLs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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