Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '609ad92d11c75ac821977fbfc7d23cdd3ffb90ae136dc36b04704b78c065573f' 
  AND token = '1PhVbdlnQZQhyB/6JnTk3FUqTxwnedL0i9aB6mwwTfQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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