Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '534a33140945c4245d46f2661e20c0b5b6f6f2584c72ab725b081ea1f48b0cd3' 
  AND token = '4TanBtm/XClJrIDRlBToXDpgvVqFpz5oa6yRDJx1jCI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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