Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '185d3d642c6858dd832e9383ea24cfe0f6c350da91a65b633b3602cd7b33720d' 
  AND token = 'O7z2MOwfYY9A0xIajmK4r0D0rQoZ4S9jFLzhue/1+h8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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