Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dea51a65db504703dbb77510ce828fce8c035ff58343255af301aea6c055aa3c' 
  AND token = 'uG/IwCCO9OjeLT4oFmroO0+DMu7X42iHUjilfTZ0xrc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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