Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '652b85fff6472f270277be58d688080e5d62e24b3422a333ca8923518c6969e1' 
  AND token = 'qHUqn5sIybzOfug30fbewU14H2WAfN04vCsEDWCKOYQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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