Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e69ecc553c4bb6ae9e8b676226878666179b6c2dfc782b696ca1a4604b3df30e' 
  AND token = 'k2RyHUTeirfu3/L0upW2QPxVEj8+5fNiBb+etxh85ak=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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