Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bf1760d8e73b55768c2dde1eb0beebc09b8d7bece1b7f6254c3ba348273193f9' 
  AND token = 'OyQgvKDhuC54dTt/nYjUbAcvyjxNd3+fbSYhGtEAhBE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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