Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3ea86153e10b85ba1da29ccea2780146bd354a01e731733dcf0adf5170011876' 
  AND token = 'eW0o6C9qT8PEf+gVMdMEGngSfHpzWFYYBBJfHAHcVsE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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