Sandbox

SELECT 
  1 
FROM 
  cscart_multi_declock_keys 
WHERE 
  key_id = 'dae2beeb685033d8f8b574c90891957c36ea6bd7e2630b92af5a7fef02fd9b27' 
  AND token = 'ritPu5c2PC6wEg5EE0Ng+GK9HBOSKQRQW1QY4grwsZg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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