SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'fabd6f59a67c9f162f12fa0d5a7a21c3a5e742404658e8f1ca3964ac4c81c24a' 
  AND token = 'QoH3MuW1bFnUDh/R16tQrwRq4kUW6VtJ+Twp6BCYK7s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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