Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bcbcfde342c26a0ac95377e6147178af92b919e8dc9d7491257f69b9e887ecf1' 
  AND token = 'stE9Kw+RrA2jn7ewLzkp55AsJVV7oGOXXMYAbt5tVyw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00057

JSON explain

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