Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '39077941be01d95e64f991ef28eb74a7b920b1c500f0503e821c36210c418adb' 
  AND token = 'e96477d8UzhxRSnYTriqvxmty0x8HUZmOOar7lTXqCc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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