Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b11d34e04259e76240fe7ddd9b1dccf96d2f14dc8a201446286077d0ac9a94ae' 
  AND token = 'eCJoSVy9SFvvXPH1FFXE5GraO1vcWyEcYJGj6fXURvY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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