Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9ccfdfce4029567f850d9d100495ec9ed85e097a191ca781e9c72f64003212df' 
  AND token = 'nX85OF/FXVx1hfefGgoyILtxch6qmMwySK1jZXlrf5c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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