Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ee3c8619c9032e992b8e4c2eb4b6d1266d6751a836c83161973847544ce1e28f' 
  AND token = 'T1g2fh3XKyyWHJ2T2pN/0QDOEeeoHvaboAyKZxaBnVY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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