Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5976cc90e7f82fa04cbbd62b8d62e881cbdb5512b122ceafe17ba33b599138ad' 
  AND token = '2nUrK0CDMWZSsiFfIaGxjRRor6dUdgxt+3XavbLesD4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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