Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ceddcd19b5656f614362e5d64a4308dce6a4b72193d45b1b778c9c796c894eaa' 
  AND token = 'NLsNcytB+HSHdY+eR626oW17N/HzkjP/KRU193QQVpM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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