Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6cda469359f562ee2da147a5036d72b813dcf10e007787a61261fc1bc13da526' 
  AND token = 'GXkTU+Fc6Z1Tha2yDNf1kKy1NutDE72MMKb6A9aonjA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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