Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '400d07b493ba26fc1a16af0435fe7c754b3334c990e19fbda614052fb99f60d8' 
  AND token = '4VgSvpq0/q/QWCAG2gr8iRkfZMb7Ns3uMgsT5YJbLRI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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