Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c0ec15715eed697291e06c7c184badb04958aca7e64f3076b003d3fa35e2c87f' 
  AND token = 'ClunCmkkBROHzUaQdw/PC3hEXkuvZBCksHR9dSDWDs8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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