Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8a47b9104c3123d8e57178b369b13ee5af1d23e43a7351544fd923aef768a67d' 
  AND token = 'n3VhsF8y0rTfZy23uNBhP0HZpdgEo0gP7zs/kYob7dI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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