Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b057f82d7e96a6898e9f38e93fdc6549d7c63626405ad432d620aa517059899b' 
  AND token = 'BuPg5nZ7k5GAfhdkxXdF68DJ8COxbipN9uHnzC+nC/Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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