Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '38ba65530202d3a95be8620c36d673caaf70958a7c76bc5e90a12f811b8147be' 
  AND token = 'u3TaET+hjQwPuMGn9LbGCn/7D7f2kMxVz/rgT+nb9gk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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