Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'be8e1455e72b4cfa40ab99249b675a81d6cc7a4f5ef828837dad0c7a874ec31f' 
  AND token = 'v7GsCO2aNpJtWVbbHZKydRSnlZakmU/W4p7RFOU6WbE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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