Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1c7da61f760b1ff8faba54e3980bef571f62a39c7a7766fb951a4c23a4ce2ed0' 
  AND token = '8Nilnd4V6Ha7lzN5fP0LIji/06BNJy/ucJd786gMIgI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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