Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '72238cfab98e349f5a2518dbd51b68d6bf1ae4e9a1908049592ed2ce9437f9aa' 
  AND token = 'VL8MXlPDA2ZLrsSa1zfZYKKc8XP4HbyAEaglPp0NN3U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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