Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0a9a39fd288a01e26725fa23582fc41b984564d1f48035a529f6417a7bf91e1b' 
  AND token = 'uw5nqegVnG0KfoKymr1cpidodEE9MSc2dk/4ANK6q5Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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