Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '449b11fcc932ad9a84da706c525f313c1b2a14b130acda3833bc3b6ef0222730' 
  AND token = '/X60WELQjYeWnKipn9KOk6bkqA2d5ygJw08qowRym2A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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