Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4e330dc622347ee70db18ca08633448b77cfc6e8ec70189c12a3ed50a4044cd3' 
  AND token = 'keMhcAh3vtEGNR/m5OhUNF1ifYqVdhmBbE7K5D2/3Ck=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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