Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a1c072b38d0b7d570283c508a4f9bce49e4cf335ab53ad5ff8e21d943512e32a' 
  AND token = 'foJleoTzstrEJMD3VQlzY2duucodA2rTim1FfKTqczI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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