Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1142bf9c48b393772065b84fefefd7f1d1aac055b35d254775aa35d64970d1d0' 
  AND token = 'sJHe9sswK7cPBsgekV//BkBAQ3gM7LLPNaa6xkg/fp0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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