Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd9de26b9db456b55544205a09d299cc2b92671f05b47362496f7b591a8577b7b' 
  AND token = 'HpqZYzneBBjyhfzstCh/8toWC7BzRAFu4D7TrZ9eYuU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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