Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7f24ef395beb9b90af00adaff09b7cd551f210582b74075239284445d23a7690' 
  AND token = 'nPhnCHTT23i71UaxSSKSXP7WCcPzwKJUNWxLVfkvG5s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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