Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '41ca2223b78c56ee5b15bd2d4cbdac8e27959d57f8ccefde088fab73750160d2' 
  AND token = 'xgqEBhxP/lM7UNQcnLrkzcdzDmhmnQPHZ/MRipUsst0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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