Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '23118f7f0062c6cfe5cd35443fc2b9db538f1ab16802eff34587db55232a3400' 
  AND token = 'VAi3xX2w4L5qzZ5DQwVfDJY+7uOqScWO3IPnRya2M1k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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