Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3cdb72f41a8243cdbc47baa6ee3ab047c22231a5a687f69615900c411883d968' 
  AND token = 'fNmYrxqn7BzcdqgWpGfWQXIrskZ6L3qiC7ykWpxewCo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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