Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '09322f5b6b958a4168ca81bc42d04d21992fe09ab02f0422f0d958175b279920' 
  AND token = '3tdRoFRSmdvi/clwBeKoStmUKjYP+K7tXw66coANeyU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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