Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3ab07254c76514cccb768df8e4de0a7abecbf731087fda459c9c079e4fd8cbe5' 
  AND token = 'URs/SSNuiTQ1jWxTcecr6yek8A9tSXf3XkqS0PO3RqE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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