Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dea1a607673f392d1d249526f5d2bbe29e5c16e6f6676dfc19c239bae927a2f6' 
  AND token = 'WULqp01ubBmwoJlxZcavuzWudCbt2vzt0ByEdGniZwo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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