Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2cee01a670c297b2860846870012c6af2e164302276bb2dd68df36385ddb8cec' 
  AND token = 'Ao8jPM8T6Upvp1N+K+yNDbVgagdf8Q6eR5p4Xs0TPv4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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