Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '13758dc13ed04d108ee161929266eb891bf773e9d2d34919cb2bdf19516213b9' 
  AND token = '/Hkk9bm0DoyukaGcjVhuMkQ7ygNNyfmDbeKrUONZLsk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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