Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1a8f1ca4088e5f8315cae1643ed7ffa62fe4dceb1919ce60b88a2b2f885f1889' 
  AND token = 'bI/22q+Ej/psb/TbaLxUn9REZAQxaAQ058HSO4oBWUU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}