Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0f042b87eae94c2de199136f1be2ac7cc02e0e1b5831a71cbb1d34ad5d219e91' 
  AND token = 'Ab9Kdp5NsRcVnghGWfW4NTB2de5kNb5gn29TbIfmJQA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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