Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '309e64afb53968079528fc4742ca8abb455ae7b4539832bb4778e15b6d4d932d' 
  AND token = 'AF1X3aC5ppSH/EWcjdo4x5EjVyjfvLd3Z6athhl5FUA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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