Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '37a4f79032b1185bd821bd2df5b6fd6dd882bdf6e708e22b875557a9799220b0' 
  AND token = 'hJRa91Wt1gHbDfAxhffKNNgEULuLrsKdBaTXsBr24ak=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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