Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fd77415c7bfeee0c80872b79ea4ac93baa497a26a517a4655c655162ae320b4d' 
  AND token = 'Q8x3tUsJQXdCdKPUaI7vu9L6OAxil5DFh7zeRYtyemA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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