Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c11e8e6338b59f30a4ca85c6a4164e449b5493a192cde3d27b2373ecf8ea41e3' 
  AND token = 'EMsaNpvTF9S85xAkytMNVYD3wWiifCb7SWUC5DvPnAY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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