Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '24e8d9e364b80b7befdb12a29be8bc322fa00f26971ad3279d61c0799e1fac6e' 
  AND token = 'U3LngrfRU8FGfkOT5nul9g1dPT5jVVDEhBout9fzFtM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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