Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '895fc637f3a81d02f2f67f2bba29b3c76121c8f4b1a6cdd2f14e865f42e69131' 
  AND token = 'GgjVD/LEu2e6eR2kTGjv0T0NNboavgsWCGfchuXAw2k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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