Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8e08fab7d76f279e57e8a68b00fe7d590dce6115203765b09200ce8dbf562649' 
  AND token = 'xf1J14xtlcVB4K3XCoVjmV7CW/abxsGxBrAZCqdFQMk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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