Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '64e72f6634a7caeb063f9ec69fc4b5a218ba7c698b5ca5437d9d64b2821ea701' 
  AND token = 'M5FxhnI+Ch6LnSVTts10iyvLNrP1aeu72vhp7yvNWh4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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