Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '531cba72e13da1bc2ae305f2d4417cf33eb95c9997705130f912b5b4003a2669' 
  AND token = 'eBtf4wKI+t4crLzIiWnQajbjWC9xwT+XF/3e4G8Kopo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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