Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b0fa439029842cc4b326b5994f2df3e684e7c64e94250c1f894ccb827cffa656' 
  AND token = 'tifzfC8qvWOf3EqfqJjclzXL8qwW0a1wc4ZZ1eEb3Po=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00053

JSON explain

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