Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6fd71d104f247e2662802ac4b34a255bd5bafc4227b390f4ec049a3373049bde' 
  AND token = 'qU00jZ4WjL24tZWgoH/9DbQjUzg0YOgq0d54tU06W1U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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