Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'd631e5eea1eeca67339de21d99b41fd16a53006835a6366fdb2a32a92d290ad5' 
  AND token = '+zxY7Cia1ThrTZJ1O7l35RtuDfj3AxH8pNerYoIclFE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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