Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd82116ad20989a0c3d08258fd834482f75fa0f6a39995df317d72d60d95fc9bd' 
  AND token = 'hQBlF890gAR8O35Bfdx5rHrJ6NaOaz/ahASKUfLMouE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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