Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '34dfd87e577306e0f043d0e4d9f816b31b86d259706d53264f4d2e84cb3df4f3' 
  AND token = 'pW68QdL9wWro5sTqLzNb3Owtm1Lhd++fp1mF+Habt20=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00098

JSON explain

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