Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8d89860aecce9e87d5ea0d6c2bf3de5d8dea41100756ab18534362ce9b99e1cd' 
  AND token = 'EDgZLPTJAS1iT+A5L/0qOYi0NQnXW1KwgKOUxGua9nY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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