Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c1acfe899439b5bdf56b69719319a7712546764ca16ea04cf95ac44b06b9b7f0' 
  AND token = '6D1NmW7tq8s3H8h9tUEC+1BFkIIBVLJI0EIXfbPoKng=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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