Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5374fb54516fabdcc372bef1b4836ea7fdf65738facab653cafd15ae116001e4' 
  AND token = 'l4BHVR9TuLIouqFx65A+DNxoL5f4EgLdsOX8pZmIzH8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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