Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3e06eafa433b866e93174ce8513cfc649578bd415235a83fd3266bf6baecd2f9' 
  AND token = 'OMk70t8takkEKIYzRq0PO1HdNHwvTuZb2pLYmgELEPY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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