Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e02fafb96a302190d5814d9c21521d4e3cc1f951ff02d6477db29a895f445ff7' 
  AND token = '5W2jwQODZ8At++MNF0ujPETbVDqvHksvxxvCM5zdzuQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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