Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '98a5d0a52c69fcc170d8e8ad9774f2c3397d2c36ec69d234af5f19be7df762b9' 
  AND token = 'AX5MotcJkd36M4nmhIHLg0z2+R4DK9Cz+LPZMMFf/gc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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