Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '943099198de8edf73cd5ac91d6a78777fcf4ee821aff7af501833e15a5ab8a03' 
  AND token = 'STTkDfhZQmHIdHXKTZ2I7y17csA0iw1I62vHsOqy74g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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