Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a0b33ee01f1124de33f8e371420df87f91c09d0054d24bc67bce71a8455f5435' 
  AND token = 'FD6zqw8vs9fRw8aRN8UP1F65SzLxuEounfm7DDEIAa8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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