SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '01a9a5a6a0da23e271ba42ebf0b7de84675a19c889f55badc22b06cee21cc3e0' 
  AND token = 'WeZcdSGMafHECJnjl3hw+VyFFR7GpYn0uBp2DvqwS2o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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