Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5e8b229593b684b00d61a0bd356594b5c956be0df0e0c5a739cb2bc7c183053e' 
  AND token = 'HseFyYZoHwBqbWmcfA1iZJtBLd55WDB7EgJKRw137fM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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