Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8f9049321feba1b32c554b1c10d4beda1d7bd7ad47814109dd02e165627b0aa9' 
  AND token = 'bF+llPn7QcbSXQYGd1kwsHy+poRVMB6Cck/0JbOxWYo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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