Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '982a566b7b0735a522e7ea0fcc32f2c499c5b72a8ec0e11cbac8f4e63e3dacfc' 
  AND token = 'D31100VPoaxGQkDICu9R9a3Cvqq5EaCLbGck9O8It/A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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