SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '9374d5f18271174287ca9a98e8270b3c7c2627d99316d64c9fb293be19d96987' 
  AND token = 'HuaUMuGL9u0XMGVFU7qy9uz6RYmJYitTx4ZSSgP3X+Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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