Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a72386f07c0f26260a119ee26ac552ffcc721c2a5a3056e2d5d30b0e671af7d8' 
  AND token = 'CY4ZJGDv40nUL3KKHvjatFwCIN9oovu5tt6XmSXrEMg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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