Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2d5d995d722bbbd422863d8a77b9efbb2cf6a9eba1df2ae01f815539d15ae872' 
  AND token = '70MMG1zpYdRP5rZcrxkEJRkFii0EoVvDtPQbzXv7/RQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}