Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4525476154e252fc8afb7a77a36e21afa65f9b03a9d7fa3e394ebb02e2e73919' 
  AND token = 'ppktYklqsIHr33wJxoqMqWnz5f3KE2NyFOH2fytn25E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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