Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0c243fd943484e5e1ff117cb1ffa4cd457952a462de9583539340d20db091700' 
  AND token = 'OnY0RRmiGNl4nEWFWfE7XrG44Su19OUrXeAzel5Lmmo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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