Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7f883e8d4f30e254d8a0832ddab6d1690a6392c7a47ae84744f3c5545ba0ab1d' 
  AND token = 'A2wP/84EWyUWtfAxRrmfHyYt8WetHzHk/sEpJsC71eg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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