Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e5c1556f87b1df0a10275e0eaef6602e0647225f47b04462ec0b23b1c81c050c' 
  AND token = '9se/VwraiIN4oDsBNsB1tE/orzQA4TkXZNEJtUJFKKU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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