Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '74c8c659d8717411c4c08b368cbbd9c5e4949924fced9345310b65b90c63edc4' 
  AND token = 'LfGpaxgSr+NS2zDj0+M8tlxpEBl6rsk7aaIB0T0jMsQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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