Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c9c2bc59d637e1c05af7033379410cd84f3d9ea9c22ecac0e17092efc39e2e8b' 
  AND token = 'SvWFXitKJUjl+FsO8oNjVA8VKSSom1n60VOz2Y5vC54=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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