Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '549033b436f8422d957334f5978564e0db75242ff175d2d268cb772fc194e534' 
  AND token = 'Qdln6Cu3U0o0r2tHTNxThA32exRzaUUMRJKT7DNEeJk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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