Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ad5dd360641d17ab93cce16f45ef72925d531412a471a542980f0748da47a8de' 
  AND token = 'F2aLjHGqa6AM3FvuksD//TNjpSBDF2DQWhGA1M9xEHk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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