Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bb4aa7086e67a6b4baa0034282a8479471f191dd1bdffe181634712191ff01b8' 
  AND token = 'mvuggvkJXSmdwzLlHI9zcEHf0QSy+7GfwKZ7yay+RFw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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