Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e37b00c2f154cf8cd317a6943218d7909f742f3b797a27eadf4fbaefdf934253' 
  AND token = 'YzrYzw/pWmp00QovQF0mAEHdqmJVnLwtkpcnitVfBN8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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