Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '86a389de048619c24b9213de746ae57b394304c809cff45446d77f7d51797e1b' 
  AND token = 'HfuPHOOkBO84SED6tlhSBdMaqWKVjIGNZYotWZbDiyo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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