Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0396d130373ee1f2e04782c7605ba55bbd9fe061d0ba75a44cf0ccbc55b820a1' 
  AND token = 'eZ4fh0wZbG7u9NUtHGj8sJ+A+wb8lm6BMSSEJ5XHcvE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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