SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '72a55bac2f225678d0ce9ac51189ff613874c5e40d53b247135f5fd361b8b92b' 
  AND token = 'FubvN0Q1pp1BY83VjF+chQhB1RAxwhpNKIUn5NVzfNA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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