Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8578c14155625262a305e42f973b3a36e3fe960cedd6681c2ec7f8f7f6a3cc29' 
  AND token = 'lspYgSzIKgtIY1D64T2CrLLeRIL/HevTZpQ9Gd1bWn4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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