Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cd251fa6eb75c517922393e9a16ecb3e280c349aae2853e8f1b40ac4f63846c4' 
  AND token = 'ayueuHtU/JknRXgJM6QPkH4ZjE4cwJYkOpmXQ7sK0Is=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00091

JSON explain

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