Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '39455d2f9330270faac31125b53dcbeaaa688ebbc9b823bd4695c684da3af72e' 
  AND token = 'jXCgUEPnkDPM3zQJyvyymEpiSf7oZsK1oEP0tcczAo8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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