Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a7354b8834a09da91e2d8be9cb0ea16485599f53144f5454b7ac2174b0becd58' 
  AND token = 'pO/cH0TQCuGXMCri7w2ziI92AIOts1b1ifF7PYT6KTk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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