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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32011dc78c1e3daed433e32b795f11156b066b224a8a4f8d643802497688e213' 
  AND token = 'geOq6iMyZUDQ7f+1cnnAo3MnhFUNX1N9p0l5KEHtfPQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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