Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4b7422053c0fe7e1c16585ee4f8567f613cd84b29f883c626c2c0c04efc986ae' 
  AND token = '0AOgwnb0gnRYWw5kRXy/64ImwqpYBYV5F07Q2HiQNSk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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