Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '144a588db05f3be9903b0153f81abb9b057abdc02a6a64f62d52fd3a764f568c' 
  AND token = 'MicP28Jwhi6DTJCPoYASR4Qlvg6ZbcujHGWsT54peN4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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