Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a806fe05414d757a3fcebe9285813ee5e2fd5fdbf4e2598cc488e49bb60d2d8d' 
  AND token = 'CNTgnMEG947W73E1Ria5wkMJhWpQPg4JYqZZboxu1FU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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